A circle is divided into 18 equal parts. How many degrees is the angle measure for each part? How many degrees is the angle measure for 5 of those parts? Break apart 18 to solve. Explain.
360 degrees (degrees of a circle) divided by 18 (the equal parts) equals 20 degrees, so each part is 20 degrees. 20 degrees times 5 parts equals 100, so the degrees of the 5 parts is 100.
